公开(公告)号：DE3612213A1

公开(公告)日：1987-10-15

申请号：DE3612213

申请日：1986-04-11

Applicant: BASF AG

Inventor： BRENNER KARL ,  RUPPEL WILHELM ,  WOERZ OTTO ,  HALBRITTER KLAUS ,  SCHEIPER HANS-JUERGEN ,  AQUILA WERNER ,  FUCHS HARTWIG

IPC: B01J8/06 ,  C07B61/00 ,  C07C45/00 ,  C07C45/38 ,  C07C45/39 ,  C07C47/21 ,  C07C67/00 ,  B01J12/00 ,  B01J23/50 ,  C07C45/29

Abstract: In the reactor for carrying out catalytic organic reactions in the gas phase, having reaction tubes (A) arranged between tube plates (B), the reaction tubes have an internal diameter in the range from 0.5 to 3 cm, the reaction tube length/internal diameter ratio is between 2 and 10, and a fluid heat transfer medium flows in the lateral direction around the reaction tubes (A). The tube bundle reactor is particularly suitable for exothermic organic reactions. … …

公开(公告)号：DE2906296A1

公开(公告)日：1980-08-28

申请号：DE2906296

申请日：1979-02-19

Applicant: BASF AG

Inventor： KROPP RUDOLF ,  THOEMEL FRANK DIPL CHEM DR ,  NUERRENBACH AXEL DIPL CHEM DR ,  HOFFMANN WERNER DIPL CHEM DR ,  WENISCH FRANZ DIPL CHEM DR ,  FUCHS HARTWIG

IPC: C07C45/00 ,  C07C45/69 ,  C07C49/517 ,  C07C67/00 ,  C07D307/20 ,  C07D309/12 ,  C07D311/74 ,  C07D311/94

Abstract: The preparation of bicyclic enol-ethers (I) (I) (where n is from 3 to 12, and R1, R2 and R3 may be H or C1-C4-alkyl) by free radical adduct formation of CHR1 =CR2-CHR3-O-R4 (III)(where R4 is tert.-butyl, tetrahydrofuran-2-yl or tetrahydropyran-2-yl) with a cyclic ketone (IV) (IV) followed by acid-catalyzed cyclization, and novel compounds II (II) The compounds (I) and (II) are intermediates for the synthesis of musk-like fragrances.

公开(公告)号：CA2492261A1

公开(公告)日：2004-01-22

申请号：CA2492261

申请日：2003-07-14

Applicant: BASF AG

Inventor： FUCHS HARTWIG ,  GERLACH TILL ,  WEGNER GUENTER ,  GOEBBEL HANS-GEORG ,  UNVERRICHT SIGNE ,  SALDEN AXEL

IPC: C07B61/00 ,  C07C29/141 ,  C07C33/025

Abstract: Disclosed is a method for selective hydrogenation of citronellal to form citronellol, wherein a liquid phase in which the citronellal is dissolved an d in which particles of a catalyst are suspended, said catatalyst resulting in preferential hydrogenation of carbon-oxygen double bonds in relation to carb on carbon bonds, is guided in the presence of a gas containing hydrogen through a device which inhibits the transport of the catalyst particles.

公开(公告)号：ES2192006T3

公开(公告)日：2003-09-16

申请号：ES99118458

申请日：1999-09-17

Applicant: BASF AG

Inventor： THERRE JORG DR ,  KAIBEL GERD DR ,  AQUILA WERNER DR ,  WEGNER GUNTER DR ,  FUCHS HARTWIG

IPC: C07B61/00 ,  C07C41/28 ,  B01J27/16 ,  C07C43/15 ,  C07C45/37 ,  C07C45/51 ,  C07C45/54 ,  C07C45/67 ,  C07C47/21 ,  C07C49/203

Abstract: Preparation of citral (I) comprises thermal decomposition of 3-methyl-2-buten-1-al-diprenylacetal and rearrangement of obtained intermediates cis/trans-prenyl-(methyl-butadienyl)-ether (IV) and 2,4,4-trimethyl-3-formyl-1,5-hexadiene (V). (IV) and (V) are continuously distilled off and converted into (I) before or after removal of by-product prenol. Preparation of 3,7-dimethyl-2,6-octadien-1-al (citral) of formula (I) comprises: (1) thermal decomposition of 3-methyl-2-buten-1-al-diprenylacetal of formula (II) optionally in the presence of an acid catalyst to split off 3-methyl-buten-1-ol (prenol) of formula (III) and form cis/trans-prenyl-(methyl-butadienyl)-ether of formula (IV); (2) Claisen rearrangement of (IV) to give 2,4,4-trimethyl-3-formyl-1,5-hexadiene of formula (V); and (3) Cope rearrangement of (V) to form (I). The transitionally formed (IV) and (V) and the desired citral as well as the prenol (III) are continuously distilled out of the reaction mixture and (IV) and (V), before or after distillative separation of (III) and optional by-products, are subjected to rearrangement to form (I) at 100-200 degrees C.

公开(公告)号：SI0992477T1

公开(公告)日：2003-06-30

申请号：SI9930238

申请日：1999-09-17

Applicant: BASF AG

Inventor： THERRE JOERG DR ,  KAIBEL GERD DR ,  AQUILA WERNER DR ,  WEGNER GUENTER DR ,  FUCHS HARTWIG

IPC: C07B61/00 ,  C07C41/28 ,  B01J27/16 ,  C07C43/15 ,  C07C45/37 ,  C07C45/51 ,  C07C45/54 ,  C07C45/67 ,  C07C47/21 ,  C07C49/203

Abstract: Preparation of citral (I) comprises thermal decomposition of 3-methyl-2-buten-1-al-diprenylacetal and rearrangement of obtained intermediates cis/trans-prenyl-(methyl-butadienyl)-ether (IV) and 2,4,4-trimethyl-3-formyl-1,5-hexadiene (V). (IV) and (V) are continuously distilled off and converted into (I) before or after removal of by-product prenol. Preparation of 3,7-dimethyl-2,6-octadien-1-al (citral) of formula (I) comprises: (1) thermal decomposition of 3-methyl-2-buten-1-al-diprenylacetal of formula (II) optionally in the presence of an acid catalyst to split off 3-methyl-buten-1-ol (prenol) of formula (III) and form cis/trans-prenyl-(methyl-butadienyl)-ether of formula (IV); (2) Claisen rearrangement of (IV) to give 2,4,4-trimethyl-3-formyl-1,5-hexadiene of formula (V); and (3) Cope rearrangement of (V) to form (I). The transitionally formed (IV) and (V) and the desired citral as well as the prenol (III) are continuously distilled out of the reaction mixture and (IV) and (V), before or after distillative separation of (III) and optional by-products, are subjected to rearrangement to form (I) at 100-200 degrees C.

公开(公告)号：SI0947493T1

公开(公告)日：2003-04-30

申请号：SI9930177

申请日：1999-03-26

Applicant: BASF AG

Inventor： BROECKER FRANZ JOSEF DR ,  KAIBEL GERD DR ,  AQUILA WERNER DR ,  FUCHS HARTWIG ,  WEGNER GUENTER DR ,  STROEZEL MANFRED

IPC: B01J23/44 ,  B01J8/20 ,  B01J8/22 ,  B01J19/24 ,  B01J23/46 ,  C07B61/00 ,  C07C45/62 ,  C07C47/21 ,  C07C49/04

Abstract: Production of saturated carbonyl compounds (I) by selective liquid-phase hydrogenation of alpha , beta -unsaturated carbonyl compounds (II) is carried out in a packed bubble column with the product recycled and by circulating hydrogen gas. Production of saturated carbonyl compounds of formula R1-CH(R2)-CH(R3)-C(R4)=O (I) by selective liquid-phase hydrogenation of alpha , beta -unsaturated carbonyl compounds of formula R1-C(R2)=C(R3)-C(R4)=O (II) in the presence of a particulate palladium and/or rhodium catalyst and a base is carried out in a packed bubble column with the product recycled and by circulating hydrogen gas. R1 = H or an organic group; R2-R4 = H or 1-4C alkyl.

公开(公告)号：DK0992477T3

公开(公告)日：2003-02-24

申请号：DK99118458

申请日：1999-09-17

Applicant: BASF AG

Inventor： THERRE JOERG DR ,  KAIBEL GERD DR ,  AQUILA WERNER DR ,  WEGNER GUENTER DR ,  FUCHS HARTWIG

IPC: B01J27/16 ,  C07B61/00 ,  C07C41/28 ,  C07C43/15 ,  C07C45/37 ,  C07C45/51 ,  C07C45/54 ,  C07C45/67 ,  C07C47/21 ,  C07C49/203

Abstract: Preparation of citral (I) comprises thermal decomposition of 3-methyl-2-buten-1-al-diprenylacetal and rearrangement of obtained intermediates cis/trans-prenyl-(methyl-butadienyl)-ether (IV) and 2,4,4-trimethyl-3-formyl-1,5-hexadiene (V). (IV) and (V) are continuously distilled off and converted into (I) before or after removal of by-product prenol. Preparation of 3,7-dimethyl-2,6-octadien-1-al (citral) of formula (I) comprises: (1) thermal decomposition of 3-methyl-2-buten-1-al-diprenylacetal of formula (II) optionally in the presence of an acid catalyst to split off 3-methyl-buten-1-ol (prenol) of formula (III) and form cis/trans-prenyl-(methyl-butadienyl)-ether of formula (IV); (2) Claisen rearrangement of (IV) to give 2,4,4-trimethyl-3-formyl-1,5-hexadiene of formula (V); and (3) Cope rearrangement of (V) to form (I). The transitionally formed (IV) and (V) and the desired citral as well as the prenol (III) are continuously distilled out of the reaction mixture and (IV) and (V), before or after distillative separation of (III) and optional by-products, are subjected to rearrangement to form (I) at 100-200 degrees C.

公开(公告)号：DE19814879A1

公开(公告)日：1999-10-07

申请号：DE19814879

申请日：1998-04-02

Applicant: BASF AG

Inventor： BROECKER FRANZ JOSEF ,  KAIBEL GERD ,  AQUILA WERNER ,  FUCHS HARTWIG ,  WEGNER GUENTER ,  STROEZEL MANFRED

IPC: B01J23/44 ,  B01J8/20 ,  B01J8/22 ,  B01J19/24 ,  B01J23/46 ,  C07B61/00 ,  C07C45/62 ,  C07C47/21 ,  C07C49/04

Abstract: Production of saturated carbonyl compounds (I) by selective liquid-phase hydrogenation of alpha , beta -unsaturated carbonyl compounds (II) is carried out in a packed bubble column with the product recycled and by circulating hydrogen gas. Production of saturated carbonyl compounds of formula R1-CH(R2)-CH(R3)-C(R4)=O (I) by selective liquid-phase hydrogenation of alpha , beta -unsaturated carbonyl compounds of formula R1-C(R2)=C(R3)-C(R4)=O (II) in the presence of a particulate palladium and/or rhodium catalyst and a base is carried out in a packed bubble column with the product recycled and by circulating hydrogen gas. R1 = H or an organic group; R2-R4 = H or 1-4C alkyl.

公开(公告)号：DE4242677A1

公开(公告)日：1994-06-23

申请号：DE4242677

申请日：1992-12-17

Applicant: BASF AG

Inventor： HETTERICH MANFRED ,  SCHOLZ HANS-ULRICH DR ,  FUCHS HARTWIG ,  LAUTERBACH GERALD DR

IPC: C07C41/56 ,  C07C43/303 ,  C07C43/315

公开(公告)号：AU2003254348A1

公开(公告)日：2004-02-02

申请号：AU2003254348

申请日：2003-07-14

Applicant: BASF AG

Inventor： WEGNER GUNTER ,  FUCHS HARTWIG ,  UNVERRICHT SIGNE ,  SALDEN AXEL ,  GOBBEL HANS-GEORG

IPC: C07C45/62 ,  C07C47/21